| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.SL.TZ2.21 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 21 | Adapted from | N/A |
Question
Three wires, P, Q and R, carry equal currents directed into the plane of the paper.
Which arrow correctly identifies the direction of the magnetic force on wire P?
A. W
B. X
C. Y
D. Z
Markscheme
B
Examiners report
The candidates were not sure of how to tackle this. At some stage in their course, however, they should have seen wires carrying a current in the same direction, attracting each other; in which case this question is trivial.
